|Grant Number:||5R01CA142996-03 Interpret this number|
|Primary Investigator:||Olopade, Olufunmilayo|
|Organization:||University Of Chicago|
|Project Title:||Genome-Wide Association Study of Breast Cancer in the African Diaspora|
DESCRIPTION (provided by applicant): The paucity of data on the genetic epidemiology of breast cancer for racial/ethnic groups other than those of European ancestry hinders the development of innovative interventions to reduce health disparities. Women in the African Diaspora experience a disproportionate burden of pre-menopausal breast cancer in comparison to all other races for reasons that remain unknown and understudied. This higher proportion of early-onset breast cancer might suggest a stronger genetic component in these populations. Genome-wide association studies (GWAS) have revealed several genetic loci that confer risk of breast cancer. Because all GWAS started the discovery stage in women of European ancestry and replicated mainly in women of European ancestry, we propose a novel approach for a GWAS in indigenous African women to identify alleles associated with breast cancer risk which will then be replicated in other populations. This innovative design builds on our current understanding of the etiologic heterogeneity in breast cancer and the distribution of breast cancer molecular subtypes which differ between women of African ancestry and women of European ancestry. The major objective of the proposed studies is to get to the "root" causes of breast cancer by identifying breast cancer risk alleles in a pooled sample of women of African ancestry and to replicate our findings in other populations. To achieve this objective, we propose the following specific aims: 1) Genotype 1,796 breast cancer cases and 1,988 controls of African ancestry using the Illumina Human1M BeadChip platform. These include 944 cases and 665 controls form Ibadan, Nigeria, 171 cases and 378 controls from Barbados, and 681 cases and 945 controls from Chicago, Detroit, Philadelphia and Baltimore; 2) Conduct both standard and novel genetic analyses of the data to map genes associated with breast cancer susceptibility, 3) Verify genotyping and carry out fine-mapping studies in genes or regions showing association with breast cancer risk and related clinical phenotypes and 4) Replicate in other African American and non-African American populations. By pooling unique resources from studies throughout the African Diaspora, this study has the potential to identify risk alleles in several genes that contribute to increased breast cancer risk and may have implications for early detection, prognosis and treatment of breast cancer in ALL women. This should ultimately lead to improved outcomes for those who suffer a disproportionate burden of early-onset breast cancer. PUBLIC HEALTH RELEVANCE: Of all the racial/ethnic groups in the United States, African Americans have the highest mortality rate of breast cancer diagnosed in women under 35 years of age, and in Africa, breast cancer is a uniformly fatal affliction of young women, in part, due to poor access to care and ignorance of the disease. This project focuses on the understudied global problem of breast cancer in the African Diaspora and attempts to translate recent advances in genomics research to benefit women who are at risk of developing hormone receptor negative breast cancer, an aggressive form of breast cancer that often affects younger women. Better understanding of the genetic risks of breast cancer for women in the African Diaspora should lead to better clinical risk assessment and the development of more effective strategies for prevention, early detection and treatment of breast cancer for ALL women.
Expression of polycomb targets predicts breast cancer prognosis.
Authors: Jene-Sanz A, Váraljai R, Vilkova AV, Khramtsova GF, Khramtsov AI, Olopade OI, Lopez-Bigas N, Benevolenskaya EV
Source: Mol Cell Biol, 2013 Oct;33(19), p. 3951-61.
EPub date: 2013 Aug 5.
A meta-analysis identifies new loci associated with body mass index in individuals of African ancestry.
Authors: Monda KL, Chen GK, Taylor KC, Palmer C, Edwards TL, Lange LA, Ng MC, Adeyemo AA, Allison MA, Bielak LF, Chen G, Graff M, Irvin MR, Rhie SK, Li G, Liu Y, Liu Y, Lu Y, Nalls MA, Sun YV, Wojczynski MK, Yanek LR, Aldrich MC, Ademola A, Amos CI, Bandera EV, Bock CH, Britton A, Broeckel U, Cai Q, Caporaso NE, Carlson CS, Carpten J, Casey G, Chen WM, Chen F, Chen YD, Chiang CW, Coetzee GA, Demerath E, Deming-Halverson SL, Driver RW, Dubbert P, Feitosa MF, Feng Y, Freedman BI, Gillanders EM, Gottesman O, Guo X, Haritunians T, Harris T, Harris CC, Hennis AJ, Hernandez DG, McNeill LH, Howard TD, Howard BV, Howard VJ, Johnson KC, Kang SJ, Keating BJ, Kolb S, Kuller LH, Kutlar A, Langefeld CD, Lettre G, Lohman K, Lotay V, Lyon H, Manson JE, Maixner W, Meng YA, Monroe KR, Morhason-Bello I, Murphy AB, Mychaleckyj JC, Nadukuru R, Nathanson KL, Nayak U, N'diaye A, Nemesure B, Wu SY, Leske MC, Neslund-Dudas C, Neuhouser M, Nyante S, Ochs-Balcom H, Ogunniyi A, Ogundiran TO, Ojengbede O, Olopade OI, Palmer JR, Ruiz-Narvaez EA, Palmer ND, Press MF, Rampersaud E, Rasmussen-Torvik LJ, Rodriguez-Gil JL, Salako B, Schadt EE, Schwartz AG, Shriner DA, Siscovick D, Smith SB, Wassertheil-Smoller S, Speliotes EK, Spitz MR, Sucheston L, Taylor H, Tayo BO, Tucker MA, Van Den Berg DJ, Edwards DR, Wang Z, Wiencke JK, Winkler TW, Witte JS, Wrensch M, Wu X, Yang JJ, Levin AM, Young TR, Zakai NA, Cushman M, Zanetti KA, Zhao JH, Zhao W, Zheng Y, Zhou J, Ziegler RG, Zmuda JM, Fernandes JK, Gilkeson GS, Kamen DL, Hunt KJ, Spruill IJ, Ambrosone CB, Ambs S, Arnett DK, Atwood L, Becker DM, Berndt SI, Bernstein L, Blot WJ, Borecki IB, Bottinger EP, Bowden DW, Burke G, Chanock SJ, Cooper RS, Ding J, Duggan D, Evans MK, Fox C, Garvey WT, Bradfield JP, Hakonarson H, Grant SF, Hsing A, Chu L, Hu JJ, Huo D, Ingles SA, John EM, Jordan JM, Kabagambe EK, Kardia SL, Kittles RA, Goodman PJ, Klein EA, Kolonel LN, Le Marchand L, Liu S, McKnight B, Millikan RC, Mosley TH, Padhukasahasram B, Williams LK, Patel SR, Peters U, Pettaway CA, Peyser PA, Psaty BM, Redline S, Rotimi CN, Rybicki BA, Sale MM, Schreiner PJ, Signorello LB, Singleton AB, Stanford JL, Strom SS, Thun MJ, Vitolins M, Zheng W, Moore JH, Williams SM, Ketkar S, Zhu X, Zonderman AB, NABEC Consortium, UKBEC Consortium, BioBank Japan Project, AGEN Consortium, Kooperberg C, Papanicolaou GJ, Henderson BE, Reiner AP, Hirschhorn JN, Loos RJ, North KE, Haiman CA
Source: Nat Genet, 2013 Jun;45(6), p. 690-6.
EPub date: 2013 Apr 14.
Fine mapping of breast cancer genome-wide association studies loci in women of African ancestry identifies novel susceptibility markers.
Authors: Zheng Y, Ogundiran TO, Falusi AG, Nathanson KL, John EM, Hennis AJ, Ambs S, Domchek SM, Rebbeck TR, Simon MS, Nemesure B, Wu SY, Leske MC, Odetunde A, Niu Q, Zhang J, Afolabi C, Gamazon ER, Cox NJ, Olopade CO, Olopade OI, Huo D
Source: Carcinogenesis, 2013 Jul;34(7), p. 1520-8.
EPub date: 2013 Mar 8.
Microsatellites in the estrogen receptor (ESR1, ESR2) and androgen receptor (AR) genes and breast cancer risk in African American and Nigerian women.
Authors: Zheng Y, Huo D, Zhang J, Yoshimatsu TF, Niu Q, Olopade OI
Source: PLoS One, 2012;7(7), p. e40494.
EPub date: 2012 Jul 11.
Lack of association between common single nucleotide polymorphisms in the TERT-CLPTM1L locus and breast cancer in women of African ancestry.
Authors: Zheng Y, Ogundiran TO, Adebamowo C, Nathanson KL, Domchek SM, Rebbeck TR, Simon MS, John EM, Hennis A, Nemesure B, Wu SY, Leske MC, Ambs S, Niu Q, Zhang J, Cox NJ, Olopade OI, Huo D
Source: Breast Cancer Res Treat, 2012 Feb;132(1), p. 341-5.
EPub date: 2011 Nov 29.
Novel germline PALB2 truncating mutations in African American breast cancer patients.
Authors: Zheng Y, Zhang J, Niu Q, Huo D, Olopade OI
Source: Cancer, 2012 Mar 1;118(5), p. 1362-70.
EPub date: 2011 Aug 26.
Germline mutational analysis of the C19orf62 gene in African-American women with breast cancer.
Authors: Zheng Y, Zhang J, Niu Q, Olopade OI, Huo D
Source: Breast Cancer Res Treat, 2011 Jun;127(3), p. 871-7.
EPub date: 2011 Mar 24.